CVE-2017-8906
Published: 11 May 2017
An integer underflow vulnerability exists in pixel-a.asm, the x86 assembly code for planeClipAndMax() in MulticoreWare x265 through 2.4, as used by the x265_encoder_encode dependency in libbpg and other products. A small picture can cause an integer underflow, which leads to a Denial of Service in the process of encoding.
Notes
| Author | Note |
|---|---|
| msalvatore | Affected code is *NOT* disabled in xenial. Xenial is affected. Upstream has not released a patch, rather, they have "disabled 'planeClipAndMax' assembly primitives" |
| ccdm94 | it seems like upstream has already closed this issue and will be providing a fix for it other than the suggested disabling of the 'planeClipAndMax' assembly primitives. Therefore, considering that this has been deferred for 5+ years and there were no further changes that allow this to be patched in xenial, xenial will be marked as ignored. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
x265 Launchpad, Ubuntu, Debian |
artful |
Ignored
(end of life)
|
| bionic |
Not vulnerable
(affected code is not enabled)
|
|
| cosmic |
Not vulnerable
(affected code is not enabled)
|
|
| disco |
Not vulnerable
(affected code is not enabled)
|
|
| eoan |
Not vulnerable
(affected code is not enabled)
|
|
| focal |
Not vulnerable
(affected code is not enabled)
|
|
| groovy |
Not vulnerable
(affected code is not enabled)
|
|
| hirsute |
Not vulnerable
(affected code is not enabled)
|
|
| impish |
Not vulnerable
(affected code is not enabled)
|
|
| jammy |
Not vulnerable
(affected code is not enabled)
|
|
| trusty |
Does not exist
|
|
| upstream |
Needed
|
|
| xenial |
Ignored
(see notes)
|
|
| yakkety |
Ignored
(end of life)
|
|
| zesty |
Ignored
(end of life)
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |